Hopefully fix locale aware language sorting in document and prefs dialogs.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@24758 a592a061-630c-0410-9148-cb99ea01b6c8

src/frontends/qt4/GuiApplication.cpp

@@ -57,6 +57,7 @@
 #include <QRegExp>
 #include <QSessionManager>
 #include <QSocketNotifier>
+#include <QSortFilterProxyModel>
 #include <QStandardItemModel>
 #include <QTextCodec>
 #include <QTimer>
@@ -156,7 +157,8 @@ GuiApplication * guiApp;
 
 
 GuiApplication::GuiApplication(int & argc, char ** argv)
-	: QApplication(argc, argv), Application(), current_view_(0), global_menubar_(0)
+	: QApplication(argc, argv), Application(), current_view_(0),
+	global_menubar_(0), language_model_(0)
 {
 	QString app_name = "LyX";
 	QCoreApplication::setOrganizationName(app_name);
@@ -250,10 +252,6 @@ GuiApplication::GuiApplication(int & argc, char ** argv)
 }
 
 
-GuiApplication::~GuiApplication()
-{}
-
-
 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd)
 {
 	FuncStatus flag;
@@ -457,20 +455,29 @@ void GuiApplication::exit(int status)
 void GuiApplication::execBatchCommands()
 {
 	LyX::ref().execBatchCommands();
+}
 
-	language_model_ = new QStandardItemModel(this);
-	language_model_->insertColumns(0, 1);
+QAbstractItemModel * GuiApplication::languageModel()
+{
+	if (language_model_)
+		return language_model_;
+
+	QStandardItemModel * lang_model = new QStandardItemModel(this);
+	lang_model->insertColumns(0, 1);
 	int current_row;
 	Languages::const_iterator it = languages.begin();
 	Languages::const_iterator end = languages.end();
 	for (; it != end; ++it) {
-		current_row = language_model_->rowCount();
-		language_model_->insertRows(current_row, 1);
-		QModelIndex item = language_model_->index(current_row, 0);
-		language_model_->setData(item, qt_(it->second.display()), Qt::DisplayRole);
-		language_model_->setData(item, toqstr(it->second.lang()), Qt::UserRole);
+		current_row = lang_model->rowCount();
+		lang_model->insertRows(current_row, 1);
+		QModelIndex item = lang_model->index(current_row, 0);
+		lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
+		lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
 	}
-	language_model_->sort(0);
+	language_model_ = new QSortFilterProxyModel(this);
+    language_model_->setSourceModel(lang_model);
+	language_model_->setSortLocaleAware(true);
+	return language_model_;
 }
 
 

src/frontends/qt4/GuiApplication.h

@@ -30,7 +30,7 @@
 #include <vector>
 
 class QSessionManager;
-class QStandardItemModel;
+class QAbstractItemModel;
 
 namespace lyx {
 
@@ -55,8 +55,6 @@ class GuiApplication : public QApplication, public Application
 
 public:
 	GuiApplication(int & argc, char ** argv);
-	///
-	virtual ~GuiApplication();
 
 	/// Method inherited from \c Application class
 	//@{
@@ -106,7 +104,7 @@ public:
 	///
 	ColorCache & colorCache() { return color_cache_; }
 
-	QStandardItemModel * languageModel() { return language_model_; }
+	QAbstractItemModel * languageModel();
 
 	/// return a suitable serif font name.
 	virtual QString const romanFontName();
@@ -147,7 +145,7 @@ private:
 	///
 	ColorCache color_cache_;
 	///
-	QStandardItemModel * language_model_;
+	QSortFilterProxyModel * language_model_;
 	///
 	QTranslator qt_trans_;
 	///

src/frontends/qt4/GuiDocument.cpp

@@ -50,9 +50,9 @@
 
 #include "frontends/alert.h"
 
+#include <QAbstractItemModel>
 #include <QCloseEvent>
 #include <QScrollBar>
-#include <QStandardItemModel>
 #include <QTextCursor>
 
 #include <sstream>
@@ -788,7 +788,10 @@ GuiDocument::GuiDocument(GuiView & lv)
 	connect(langModule->quoteStyleCO, SIGNAL(activated(int)),
 		this, SLOT(change_adaptor()));
 	// language & quotes
-	langModule->languageCO->setModel(guiApp->languageModel());
+	QAbstractItemModel * language_model = guiApp->languageModel();
+	// FIXME: it would be nice if sorting was enabled/disabled via a checkbox.
+	language_model->sort(0);
+	langModule->languageCO->setModel(language_model);
 
 	// Always put the default encoding in the first position.
 	// It is special because the displayed text is translated.

src/frontends/qt4/GuiPrefs.cpp

@@ -46,6 +46,7 @@
 #include "frontends/alert.h"
 #include "frontends/Application.h"
 
+#include <QAbstractItemModel>
 #include <QCheckBox>
 #include <QColorDialog>
 #include <QFontDatabase>
@@ -54,7 +55,6 @@
 #include <QPixmapCache>
 #include <QPushButton>
 #include <QSpinBox>
-#include <QStandardItemModel>
 #include <QString>
 #include <QTreeWidget>
 #include <QTreeWidgetItem>
@@ -1651,7 +1651,10 @@ PrefLanguage::PrefLanguage(QWidget * parent)
 
 	defaultLanguageCO->clear();
 
-	defaultLanguageCO->setModel(guiApp->languageModel());
+	QAbstractItemModel * language_model = guiApp->languageModel();
+	// FIXME: it would be nice if sorting was enabled/disabled via a checkbox.
+	language_model->sort(0);
+	defaultLanguageCO->setModel(language_model);
 }